/* Floating, homepage-only navigation. Keep the document as the sticky scroll container. */
.home-page { overflow-x: clip; background: #eef4fb; }
.site-utility { padding: 7px 16px; background: #0b2855; color: #d5e5ff; font: 500 10px/1.5 'DM Sans', sans-serif; }
.site-utility > div { max-width: 1290px; margin: auto; display: flex; align-items: center; justify-content: space-between; gap: 12px; }
.site-utility > div > span { display: flex; align-items: center; gap: 7px; font-size: 9px; letter-spacing: 1.2px; }
.site-utility b { color: #a7eee9; font-size: 10px; letter-spacing: .4px; font-weight: 500; }
.site-utility i { width: 5px; height: 5px; border-radius: 50%; background: #a6f0eb; box-shadow: 0 0 0 3px #a6f0eb13; }
.site-utility a { display: flex; align-items: center; gap: 14px; color: #d5e5ff; text-decoration: none; font-size: 10px; }
.site-utility a:hover { color: #a6f0eb; }
.site-header { position: sticky; top: 10px; z-index: 150; width: calc(100% - 32px); max-width: 1320px; margin: 14px auto; border: 1px solid #fff; border-radius: 22px; background: #ffffffed; font-family: 'DM Sans', sans-serif; box-shadow: 0 2px 5px #123d6c04, 0 8px 28px -14px #214c7b26; backdrop-filter: blur(16px); -webkit-backdrop-filter: blur(16px); }
.site-header::after { content: ''; position: absolute; pointer-events: none; inset: auto 10% -1px; height: 1px; background: linear-gradient(90deg, transparent, #8dc6ec90, transparent); transform-origin: left; animation: header-trace 1.1s ease-out both; }
.site-header-inner { position: relative; min-height: 74px; padding: 12px 16px; margin: auto; display: flex; align-items: center; justify-content: space-between; gap: 16px; }
.site-brand { display: inline-flex; align-items: center; gap: 10px; min-width: 0; text-decoration: none; color: #102d59; }
.site-brand img { display: block; width: 43px; height: 43px; flex: none; border: 1px solid #dbe9f5; border-radius: 50%; background: white; }
.site-brand strong { display: block; font: 700 16px/1.15 'DM Sans', system-ui, sans-serif; letter-spacing: .1px; }
.site-brand-copy { display: block; min-width: 0; }
.site-brand-subtitle { display: block; margin-top: 5px; color: #526e8c; font-size: 10px; line-height: 1.3; font-weight: 500; letter-spacing: 1.3px; text-transform: uppercase; }
.site-menu-toggle { display: flex; flex-direction: column; justify-content: center; align-items: center; gap: 5px; flex: none; width: 44px; height: 44px; border: 1px solid #dce7f3; border-radius: 50%; background: #f1f6fc; color: #153e75; cursor: pointer; }
.site-menu-toggle span { width: 18px; height: 1.5px; border-radius: 2px; background: currentColor; transition: transform .2s ease, opacity .2s ease; }
.site-menu-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(6.5px) rotate(45deg); }
.site-menu-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.site-menu-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-6.5px) rotate(-45deg); }
/* Override legacy generic navigation rules without affecting other pages. */
.home-page nav.site-nav { display: none; position: absolute; top: calc(100% + 9px); left: -1px; right: -1px; min-height: 0; max-height: calc(100dvh - 145px); overflow-y: auto; overscroll-behavior: contain; padding: 20px 16px max(16px, env(safe-area-inset-bottom)) !important; border: 1px solid #dce7f3 !important; border-radius: 22px; background: #fff !important; box-shadow: 0 24px 60px -20px #15335b55 !important; transform: none !important; backdrop-filter: none; transition: none; }
.home-page nav.site-nav.is-open { display: block; animation: header-menu-in .25s cubic-bezier(.2,.7,.3,1); }
.site-menu-intro { padding: 0 10px 17px; border-bottom: 1px solid #e6edf6; margin-bottom: 10px; }
.site-menu-intro span { display: block; color: #6081a5; font-size: 8px; font-weight: 600; letter-spacing: 1.6px; margin-bottom: 6px; }
.site-menu-intro strong { display: block; font-size: 20px; font-weight: 600; letter-spacing: -.7px; color: #14365e; }
.site-links, .site-login-links { list-style: none; margin: 0; padding: 0; }
.site-links { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 5px 8px; }
.site-links a { display: flex; align-items: center; gap: 6px; min-height: 46px; padding: 10px; border-radius: 10px; text-decoration: none; color: #3f5671; font-size: 13px; font-weight: 500; line-height: 1.4; transition: background .18s ease, color .18s ease; }
.site-links a:hover, .site-login-links a:hover { background: #edf5ff; color: #1453b3; }
.site-links .site-course-link { color: #164e99; background: #edf4fe; }
.site-course-link span { font-size: 16px; }
.site-login { position: relative; margin-top: 13px; padding-top: 13px; border-top: 1px solid #e5edf5; }
.site-login-toggle { display: flex; justify-content: space-between; align-items: center; gap: 12px; width: 100%; min-height: 44px; padding: 10px 16px; border: 1px solid #102e59; border-radius: 12px; background: #102e59; color: #f1f7ff; font: 500 13px/1.4 'DM Sans', sans-serif; cursor: pointer; }
.site-login-toggle svg { width: 14px; height: 14px; fill: none; stroke: currentColor; stroke-width: 1.5; transition: transform .2s ease; }
.site-login-toggle[aria-expanded="true"] svg { transform: rotate(180deg); }
.site-login-links { padding-top: 7px; }
.site-login-links a { display: flex; align-items: center; justify-content: space-between; min-height: 46px; gap: 14px; padding: 10px 12px; border-radius: 9px; color: #365371; text-decoration: none; font-size: 13px; }
.site-header :is(a, button):focus-visible, .site-utility a:focus-visible { outline: 2px solid #168abe; outline-offset: 3px; }
.site-header button:active { scale: .97; }
@keyframes header-trace { from { opacity: 0; transform: scaleX(0); } to { opacity: 1; transform: scaleX(1); } }
.tnc-splash-on .site-header::after { animation-play-state: paused; }
@keyframes header-menu-in { from { opacity: 0; translate: 0 -8px; } to { opacity: 1; translate: 0 0; } }
@media (min-width: 1100px) {
  .site-header { max-width: 1180px; }
  .site-utility > div { max-width: 1132px; }
  .home-page .hero { padding-top: 28px !important; }
  .site-utility { padding: 8px 32px; }
  .site-header-inner { min-height: 88px; padding: 15px 24px; gap: 28px; }
  .site-brand { gap: 12px; }
  .site-brand img { width: 48px; height: 48px; }
  .site-brand strong { font-size: 18px; }
  .site-brand-subtitle { font-size: 11px; letter-spacing: 1.5px; }
  .site-menu-toggle, .site-menu-intro { display: none; }
  .home-page nav.site-nav { display: flex; position: static; align-items: center; justify-content: flex-end; gap: 18px; max-height: none; overflow: visible; padding: 0 !important; border: 0 !important; border-radius: 0; background: transparent !important; box-shadow: none !important; animation: none; }
  .site-links { display: flex; align-items: center; gap: 0; }
  .site-links a { padding: 10px; font-size: 12px; }
  .site-links .site-course-link { margin-right: 6px; padding-inline: 14px; }
  .site-login { margin: 0; padding: 0; border: 0; }
  .site-login-toggle { border-radius: 30px; }
  .site-login-links { position: absolute; top: calc(100% + 12px); right: 0; width: 210px; padding: 7px; border: 1px solid #dce7f3; border-radius: 15px; background: #fff; box-shadow: 0 14px 35px -15px #173f6b50; }
}
@media (max-width: 600px) {
  .site-utility { padding: 7px 16px; }
  .site-utility > div { justify-content: center; }
  .site-utility a { display: none; }
  .site-utility > div > span { font-size: 8px; letter-spacing: 1.5px; }
  .site-header { width: calc(100% - 24px); margin: 11px auto; top: 8px; border-radius: 20px; }
  .site-header-inner { min-height: 72px; padding: 11px 13px; gap: 12px; }
  .site-brand strong { font-size: 16px; }
  .site-brand img { width: 40px; height: 40px; }
}
@media (max-width: 350px) {
  .site-brand { gap: 8px; }
  .site-brand strong { font-size: 14px; }
  .site-brand img { width: 36px; height: 36px; }
  .site-header-inner { padding-inline: 11px; gap: 8px; }
  .site-links a { padding-inline: 8px; font-size: 12px; }
}
@media (prefers-reduced-motion: reduce) {
  .site-header *, .site-header::after { animation: none !important; transition: none !important; }
}